Flowmaster 15-20 Ford F-150 2.7L/3.5L/5.0L Force II Cat-Back Exhaust System - 818147
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Flowmaster introduces our Force II stainless steel cat-back exhaust system for the 2021-2026 Ford F-150 trucks with the 2.7, 3.5, and 5.0-Liter engines. This system uses the Super 50 series muffler for a moderate to mild sound level and increased performance. This 3 chamber muffler has a resonance chamber to reduce interior sound, ideal for towing or long haul situations. Mandrel bent 3.00-inch to dual out 2.50-inch 409 stainless steel tubing allows for maximum exhaust flow and durability. This system uses larger 4.00-inch polished stainless steel tips for a custom look. All of the necessary hardware is included, and factory-mounting locations are used for an easy installation. Backed by Flowmaster's Lifetime Limited Warranty.
Fits 2021-2026 Ford F-150 2.7, 3.5, 5.0-liter, Force II cat-back, dual out rear exit, 4.00-inch polished tips, stainless steel exhaust system
Flowmaster Force II Cat-Back Exhaust System
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It is listed for: 2021-2026 Ford F-150; 2021-2023 Ford F-150; 2021-2026 Ford F-150 and more (see the full list above). Pick your vehicle on this page to check your exact year and trim.
The sound depends on the muffler and resonator design. A cat-back with a resonator stays closer to stock; an axle-back changes the tone more than the volume. Look for the maker's sound notes or a clip on this page.
Cat-back and axle-back systems bolt to the factory connection points. Headers and downpipes replace the factory pipe at the engine and may need new gaskets and hardware; see What's in the box.
A cat-back or axle-back needs no tune. Headers and downpipes change what the oxygen sensors see, so many cars need a tune or a sensor spacer to avoid a warning light.
Drone depends on the muffler and resonator design and your car's gearing. Systems with a resonator or an X-pipe drone less, and the maker notes when a system is built to be quiet at cruise.
An axle-back or cat-back is a jack-stands job with the right sockets and penetrating oil for rusty bolts. Headers and downpipes take more room and time, and a lift helps.
Most systems include the clamps and gaskets they need; see What's in the box. Reuse a factory gasket only if it is undamaged.
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